Odd Harmonics With A Time Stamp With The Function Codes 0X03 And 0X04 - Siemens SENTRON PAC4220 Manual

Appendix
A.1 Modbus
Offset Length
FC0x03
FC0x04
See 2
formula
See 2
formula
See 2
formula
A.1.8

Odd harmonics with a time stamp with the function codes 0x03 and 0x04

Formula
The offsets of the 5th to 65th odd harmonics can be calculated using the formula below:
nth - stands for the number of the harmonic
Example 1
Calculation of offset "Max. 5th harmonic voltage L1-N with time":
• 12999 + (6 + 3) x (5 − 3) = 13017
• Offset of "Max. 5th harmonic voltage L1-N with time" is 13017.
Example 2
Calculation of offset of "Max. 31st harmonic voltage L3-N with time":
• 13011 + (6 + 3) x (31 − 3) = 13263
• Offset of "Max. 31st harmonic voltage L3-N with time" is 13263.
Tables
Offset Length
FC0x03
FC0x04
12999 6
13005 6
13011 6
See 6
formula
124
Name
nth Harmonic voltage L1-L2
nth Harmonic voltage L2-L3
nth Harmonic voltage L3-L1
Name
Max. 3rd harmonic voltage L1-N with time
Max. 3rd harmonic voltage L2-N with time
Max. 3rd harmonic voltage L3-N with time
Max. nth harmonic voltage L1-N with time
Format Unit
FLOAT %
FLOAT %
FLOAT %
Format Unit
FLOAT+TIME‐ %
STAMP
FLOAT+TIME‐ %
STAMP
FLOAT+TIME‐ %
STAMP
FLOAT+TIME‐ %
STAMP
Equipment Manual, L1V30827278B-01
Access
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R
R
Access
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PAC4220